Patents by Inventor Andrew P. Pellerin

Andrew P. Pellerin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Double ridge waveguide rotary joint
    Patent number: 4298850
    Abstract: An I type (straight) double ridge waveguide rotary joint is provided by connecting input and output sections of double ridge waveguide, oriented along a common axis, to opposite ends of a coaxial line rotary joint that is on the same axis. The input and output sections each connect to the coaxial line rotary joint by a transformer that connects one ridge to the center conductor of the adjacent coaxial line and the other ridge to the outer conductor of the coaxial line, the connections being made in several transitions to avoid an abrupt change of impedance in progressing along the axis through the transformer.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: November 3, 1981
    Assignee: Microwave Antenna Systems and Technology Inc.
    Inventors: Andrew P. Pellerin, Christ Theophile